Engine



FIG. 1 is a perspective view of an engine embodying the invention;

FIG. 2 is a front view of the engine of FIG. 1;

FIG. 3 is a first side view of the engine of FIG. 1;

FIG. 4 is a second side view opposite the first side view of the engine of FIG. 1;

FIG. 5 is a top view of the engine cover of FIG. 1;

FIG. 6 is a bottom view of the engine cover of FIG. 1; and,

FIG. 7 is a rear view of the engine cover of FIG. 1. 

We claim the ornamental design for an engine, as shown and described. 